Messenger linking issue

Upon updating YACS, messenger links disappaered from user list, and can't find way to turn them back on.

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i have no idea why, but when i ran an update on my server, all the yahoo references, AIM, jabber..whatever..they all disapeared. It was as if i turned of instant messenger data or something. it's still in the db, but it just doesn't show up. I have scoured the control panel for an hour and can't find it. all i know is, it used to work and now it doesn't. I know that if i take a clean version of the code, and DON'T UPDATE IT! the icons miraculously reappear. Version 7.3.1 is the version in question.